[Mimedefang] OFF TOPIC

[Mike Batchelor]

In sendmail.cf:
O DontProbeInterfaces=True
Cwdomain.com

DontProbeInterfaces=True keeps sendmail from looking at DNS for its own IP 
addresses, in order to determine what is a local domain.  It will then only 
accept email for local delivery if it is addressed to domains listed in 
Class w, which you have to define explicitly (since sendmail is now 
prevented from creating this class itself).  Any other recipients will be 
bounced or relayed, depending on the rest of your sendmail.cf.

Then it is up to you to arrange for mail addressed to domains in Class w to 
arrive at this host.  The alias arrangement you described should work just 
fine.

Another way to do this is with LUSER_RELAY.  If a recipient is determined 
to be local, but the user part does not correspond to a Unix mailbox or an 
alias, then the mail is relayed to LUSER_RELAY.  Doing it this way avoids 
having to make an alias for users who want their mail filtered.  If their 
account exists on the non-filtered host, it is delivered there.  If the 
account does not exist, it is forwarded to the filter host.

--On Wednesday, January 29, 2003 3:06 PM -0500 Chad Stalvey 
<cstalvey at hcsmail.com> wrote:

> I have a mailserver at domain.com. I'm going to offer Mimedefang as an
> optional service. What I want to do is set it up on a different server,
> say filter.domain.com, then whoever wants the service will have an alias
> set up to forward their mail to that server. Now, I only want the sendmail
> connections to come from the server at domain.com. IE: If someone tries to
> send a message directly to someone at filter.domain.com, it will not go
> through. Is there a way to let sendmail handle this? Or should I not make
> an entry in DNS for filter.domain.com and just have it in the hosts file
> of domain.com?
>
> Thanks.
>
> Chad Stalvey
>
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